Electronic Resource
Woodbury, NY
:
American Institute of Physics (AIP)
Applied Physics Letters
65 (1994), S. 720-721
ISSN:
1077-3118
Source:
AIP Digital Archive
Topics:
Physics
Notes:
The recently proposed Auger recombination mechanism in quantum wells (QWs) has been studied by means of excitation-dependent photoconductivity (EDPC) and photoluminescence (PL) in acceptor doped QWs. Free charge carriers are found to be formed although the optical excitation is resonant with the excitons well below the band gap at low temperatures. The carriers are monitored via EDPC measurements or via the enhancement of the free-to-bound transition observed in PL. The prerequisite for an excitonic Auger process in the model proposed is an ionized impurity, accomplished via the two-hole transition of the bound exciton.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.112235
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